13-04-2020, 06:55 PM
Using 2D mode for 2D physics is a must 
.
Even if all your initial particle positions are 0 in the z axis, the slightest numerical precision error can introduce non-zero values in the z axis resulting in unintended behavior. 2D mode actually skips the z component in all internal math operations, so that this can't ever happen. If you're using regular rigidbodies, constraining them to the XY plane is also a good idea because of the same reason.
Increasing the amount of substeps will greatly improve the quality of the simulation. See:
http://obi.virtualmethodstudio.com/tutor...gence.html
.Even if all your initial particle positions are 0 in the z axis, the slightest numerical precision error can introduce non-zero values in the z axis resulting in unintended behavior. 2D mode actually skips the z component in all internal math operations, so that this can't ever happen. If you're using regular rigidbodies, constraining them to the XY plane is also a good idea because of the same reason.
Increasing the amount of substeps will greatly improve the quality of the simulation. See:
http://obi.virtualmethodstudio.com/tutor...gence.html